In order to operate trains efficiently at high speeds regardless of vehicles involved; a development of control systems is essential to provide stable braking forces. In designing the said brake control systems, it is important to consider robustness, because there are model uncertainties, which result from nonlinear characteristics for adhesion between wheels and rails, and friction coefficients of brake materials. This paper presents experimental results regarding a new wheel-slip prevention control designed by a sliding mode control theory. We performed the experiments for the proposed wheel-slip prevention control in comparing with some conventional control laws. The experimental results proved the effectiveness of the proposed control as compared with conventional equivalents, and indicated high braking performance under nonlinear characteristics of brake dynamics.

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